Finding the Fourth Proportional to 1,011,117.12, 1,395,349.92 and 558,415.68
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Solution
The fourth proportional to 1,011,117.12, 1,395,349.92 and 558,415.68 is: 770,618.22
Step by Step Solution
- Step 1: Write the proportion equation
1,011,117.12 : 1,395,349.92 = 558,415.68 : x - Step 2: Convert to fraction form
1,011,117.12/1,395,349.92 = 558,415.68/x - Step 3: Cross multiply
1,011,117.12x = 1,395,349.92 × 558,415.68 - Step 4: Simplify right side
1,011,117.12x = 779,185,274,414.75 - Step 5: Solve for x
x = 779,185,274,414.75/1,011,117.12 - Step 6: Final answer
x = 770,618.22
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.